Clearly Identified : Capable of being recognized by a person of normal vision without causing uncertainty and indecisiveness about the location or operating process of the identified item
NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations, 2008 ed. http://www.nfpa.org/codes-and-standards/document-i nformation-pages?mode=code&code=96, (Std: Vent Control and Fr Prac of Comm Cooking Opr - Amer) {240 NFC}